nav {
    position: fixed;
    z-index: 9999;
    top: 3%;
    left: 3%;
}
nav ul {
    padding: 0;
    margin: 0;
}
nav ul li {
    padding: 0;
    margin: 0;
    list-style: none;
}
nav ul li a {
    text-decoration: none;
    font-size: 14px;
    text-transform: uppercase;
    position: relative;
    height: 30px;
    width: 30px;
    display: block;
    text-align: center;
    line-height: 30px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    border-radius: 50%;
    color: #ffffff;
    background-color: #cccccc;
}
nav ul li a:hover {
    color: #999999;
    background-color: #cccccc;
}